BIOLOGY COLLEGE

Though cyanide acts on the ETC, cyanide poisoning also has important consequences for glycolysis since both the ETC and glycolysis are involved in the production of energy. Thinking back to the regulation of enzymes in glycolysis, how would you expect the activity of key enzymes in glycolysis such as PFK-1 to change in response to cyanide poisoning?

Answers

Answer 1
Answer:

Answer:

Reduced ATP levels would activate the PFK-1

Explanation:

Phosphofructokinase-1 is a regulatory enzyme and serves as one of the major points of regulation in glycolysis. The enzyme phosphofructokinase-1 (PFK-1) catalyzes the phosphorylation of fructose 6-phosphate to obtain fructose 1, 6-bisphosphate. Here, ATP serves as a phosphate group donor. The activity of PFK-1 is increased whenever the cell’s ATP levels are reduced.

On the other hand, increased cellular levels of ADP and AMP activates the enzyme. The increased ATP levels of cells inhibit the enzyme. Cyanide inhibits the ETC and thereby, reduces the ATP levels of the cell. Therefore, reduced cellular ATP levels caused by cyanide poisoning would activate the PFK-1.


Related Questions

HIGH SCHOOL

Which of the following is a component of the plasma membrane that creates a chemical barrier between the inside and the outside of the cell? cholesterol
water
proteins
phospholipids

Answers

i believe it is phospholipid

The answer should be D: phospholipid

COLLEGE

_______ _______ _______ have been observed and documented in a wide range of animals and over a large number behaviors related to survival and reproduction.

Answers

Answer:

The answer is Fixed Action Patterns

Explanation:

Fixed Action Patterns are fixed behaviors in certain animals which they carry out in response to stimulus. This patterns are constantly repeated and do not change for a particular species.

Animals are born with this pattern so they do not need to learn it. Fixed Action Patterns increases the fitness, survival and the reproduction abilities of the animals.

HIGH SCHOOL

The client with asthma has been ordered an inhaler and the nurse is teaching how to prevent candida infections. which would the nurse include in the instructions?

Answers

The nurse should emphasize to the client to rinse mouth with water after each use and recommend using a spacer device with metered dose inhalers can help prevent infection. It would be desirable to use gargle once a day to prevent candida infections caused by yeast. In addition, candida infection or thrush is a common side effect of steroids from asthma medications.

HIGH SCHOOL

The universal regulatory mechanism in eukaryotes for controlling gene expression includes A. control of the processing of mRNA after it is transcribed from DNA but before it leaves the nucleus, and control of the rate it leaves the nucleus. B. control of the genes transcribed and the rate they are transcribed. C. control of mRNA in the cytoplasm after it leaves the nucleus, including changes to mRNA before translation begins. D. control of polypeptides after they have been synthesized but before they are functional. E. All of these mechanisms are used; there is no single universal mechanism.

Answers

Answer:

E. All of these mechanisms are used; there is no single universal mechanism.

Explanation:

Gene expression is regulated at many levels. Some of them are:

  • Chromatin remodeling regulation includes altered histone modifications such as methylation which can regulate gene expression (up or down).
  • Transcription is regulated via transcriptional factors and specificity factors such as repressors and activators.
  • RNA processing can be regulated through the alternative splicing (different introns can be excised and combinations of different exons connected)
  • Post-translational modification refers to modification of proteins after being synthesized.

HIGH SCHOOL

Why is it important for each cell to be surrounded by a cell membrane that prevents large molecules from leaving the cell?

Answers

Hi there.

The cell membrane keeps organelles and ribosomes from exiting the cell. When molecules enter the cell, the membrane also prevents it from leaving as the molecule is needed to carry out processes.

~

props to the flashcard on Quizlet,
MIDDLE SCHOOL

Because Alaska and Great Britain are at similar latitudes on our planet, do they have similar climates?

Answers

No Great Britain has warmer summers and Alaska as cooler summers
No, I don't think so.
MIDDLE SCHOOL

A main sequance star maintains a stable size as long as there is enough hydrogen to fuse into helium

Answers

As you did not state what the question is you just wrote a statement, I am guessing this is a True or False question. If there is more to the question please comment and Id be happy to help you answer more but if this is T/F then Ill answer it here right now.


A main-sequence star maintains a stable size as long as there is enough hydrogen to fuse into helium. True or False?

Answer:  True


Hope this Helps, good luck, and comment if you need help on anything else :)

HIGH SCHOOL

The disease phenylketonuria is related chiefly to abnormal metabolism of ____.​

Answers

The disease phenylketonuria is related chiefly to abnormal metabolism of a specific amino acid. It is a genetic disease which involves the overproduction of the amino acid phenylalanine in the blood. This disease is rare and is only inherited in families having autosomal recessive pattern.
MIDDLE SCHOOL

In which direction are the periods organized on the periodic table?

Answers

They are organized horizontally. 

Answer:

They are organised up and down or horizontal

Explanation:

Random Questions